// The slice aliases the buffer content at least until the next buffer modification,
// so immediate changes to the slice will affect the result of future reads.
func (b *Buffer) Bytes() []byte { return b.buf[b.off:] }

// AvailableBuffer returns an empty buffer with b.Available() capacity.
// This buffer is intended to be appended to and

	// Confirm that when Reader panics, the empty buffer remains empty
	var buf2 Buffer
	defer func() {
		recover()
		check(t, "TestReadFromPanicReader (2)", &buf2, "")
	}()
	buf2.ReadFrom(panicReader{panic: true})
}

func TestReadFromNegativeReader(t *testing.T) {
	var b Buffer
	defer func() {
		switch err := recover().(type) {
		case nil:
			t.Fatal("bytes.Buffer.ReadFrom didn't panic")
		case error:

	b.n = 0
	return nil
}

// Available returns how many bytes are unused in the buffer.
func (b *Writer) Available() int { return len(b.buf) - b.n }

// AvailableBuffer returns an empty buffer with b.Available() capacity.
// This buffer is intended to be appended to and
// passed to an immediately succeeding [Writer.Write] call.
// The buffer is only valid until the next write operation on b.
func (b *Writer) AvailableBuffer() []byte {

	v := BucketReplicationStat{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))
	en := msgp.NewWriter(msgp.Nowhere)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		v.EncodeMsg(en)
	}
	en.Flush()
}

func BenchmarkDecodeBucketReplicationStat(b *testing.B) {
	v := BucketReplicationStat{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))

	v := rebalanceInfo{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))
	en := msgp.NewWriter(msgp.Nowhere)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		v.EncodeMsg(en)
	}
	en.Flush()
}

func BenchmarkDecoderebalanceInfo(b *testing.B) {
	v := rebalanceInfo{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))

	v := BatchJobRequest{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))
	en := msgp.NewWriter(msgp.Nowhere)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		v.EncodeMsg(en)
	}
	en.Flush()
}

func BenchmarkDecodeBatchJobRequest(b *testing.B) {
	v := BatchJobRequest{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))

	switch {
	case len(w.buffer) > 0:
		err = errors.New("some file segments were not flushed from the queue")
		_ = w.w.CloseWithError(err)
	case w.err != nil:
		// No need to close here since both pipes were
		// closing inside TransferError()
		err = w.err
	default:
		err = w.w.Close()
	}
	for i := range w.buffer {
		delete(w.buffer, i)
	}
	w.wg.Wait()
	return err
}

		t.Fatal(err)
	}
	if hdr.Name != longName {
		t.Fatal("Couldn't recover long name")
	}
}

func TestValidTypeflagWithPAXHeader(t *testing.T) {
	var buffer bytes.Buffer
	tw := NewWriter(&buffer)

	fileName := strings.Repeat("ab", 100)

	hdr := &Header{
		Name:     fileName,
		Size:     4,
		Typeflag: 0,
	}
	if err := tw.WriteHeader(hdr); err != nil {

	}
}

// Test the line splitter, including some carriage returns but no long lines.
func TestScanLongLines(t *testing.T) {
	// Build a buffer of lots of line lengths up to but not exceeding smallMaxTokenSize.
	tmp := new(bytes.Buffer)
	buf := new(bytes.Buffer)
	lineNum := 0
	j := 0
	for i := 0; i < 2*smallMaxTokenSize; i++ {
		genLine(tmp, lineNum, j, true)
		if j < smallMaxTokenSize {
			j++
		} else {

			// Account for padding and forced compression overhead and encryption.
			buffer = make([]byte, data.ActualSize()+256+32+32, data.ActualSize()*2+512)
		} else {
			buffer = globalBytePoolCap.Load().Get()
			defer globalBytePoolCap.Load().Put(buffer)
		}
	case size >= fi.Erasure.BlockSize:
		buffer = globalBytePoolCap.Load().Get()
		defer globalBytePoolCap.Load().Put(buffer)
	case size < fi.Erasure.BlockSize: